Zirconiated Tungsten Heavy Metal Electrode
Zirconiated tungsten heavy metal electrodes (AWS classification EWZr-1) contain a minimum of 99.10 percent tungsten and 0.15 to 0.40 percent zirconium. A zirconiated tungsten metal electrode produces an extremely stable arc and resists tungsten spitting.It is ideal for AC welding because it retains a balled tip and has a high resistance to contamination. Its current-carrying capability is equal to or greater than that of thoriated tungsten. Under no circumstances is zirconiated recommended for DC welding.
Zirconiated Tungsten Heavy Metal Electrodes can not be replaced by any other electrodes in terms of its excellent performance. While welding, the end of electrode can retains globose, because of this the seep of tungsten phenomenon can be reduced. Zirconiated Tungsten is most commonly used for AC welding of aluminum and magnesium alloys.
Our technical staffs have been engaged in research and testing work and succeeded in solving the conflicts between zirconium contents and processing properties.
| Trade mark | Added impurity | Impurity quantity | Other impurities | Tungsten | Electric discharged power | Color sign |
| WZ3 | ZrO2 | 0.20 - 0.40% | <0.20% | The rest | 2.5 - 3.0 | Brown |
| WZ8 | ZrO2 | 0.70 - 0.90% | <0.20% | The rest | 2.5 - 3.0 | White |
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